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							<span class="time">2017</span>
							<h2 class="entry-title"><a href="#">实验一</a></h2>
							<span class="cat-links"><a href="#">作者：季兆伦</a>
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							<div class="excerpt"><p>实验一</p></div>
							<h2>一、实验目的</h2>
							<blockquote><p>（1）掌握使用计算机进行数字录音的方法。
											（2）理解不同数字化指标对声音质量和文件大小的影</p></blockquote>
							<h2>二、实验内容</h2>
							<p>（1）选择一段CD或磁带音乐或歌曲，分别以附表1中的参数录音30S到60s，分别存成两个文件WAV，记录数字声音的大小，用播放器播放，比较它们的声音质量。</p>
							<div class="post-thumbnail-wrap">
							<img src="images/1-1.jpg">
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							<p>（2）用附录2中的参数录制一下唐诗：</p>
							<div class="post-thumbnail-wrap">
							<img src="images/1-2.jpg">
							</div>
							
							<p>游  子  吟
								孟  郊
								慈母手中线，游子身上衣。
								临行密密缝，意恐迟迟归。
								谁言寸草心，报得三春晖？
								</p>
							<p>分别存成两个文件WAV，记录数字声音的大小，用播放器播放，比较它们的声音质量。</p>

							<h2>三、实验过程</h2>
							<p>（1）使用磁带放音机作声源需要使用音频线将磁带放音机或收音机的“Phone”插孔与声卡的“Line In”插孔相连；使用话筒录音，将话筒插入声卡“MIC In”插孔。</p>
							<p>（2）在Windows“控制面板”的“声音和多媒体”中，设置相应的录音声源</p>
							<p>（3）启动音频编辑软件</p>
							<p>（4）设置数字化参数，录音，记下时间长度，以未压缩WAV格式保存文件</p>
							<p>（5）用Windows资源管理器查看文件声音的大小</p>
							<p>（6）用声音播放（或音频处理）软件播放声音，比较质量有误差别</p>

							<h2>四、实验结果</h2>
							<p>打开软件选择录制格式</p>
							<div class="post-thumbnail-wrap">
							<img src="images/1-3.jpg">
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							<p>录制</p>
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							<img src="images/1-4.jpg">
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							<span class="cat-links"><a href="images/1.wav">音频文件1</a>
								<br>
							<span class="cat-links"><a href="images/1.wav">音频文件2</a>


							
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